Ball-bearing car sash



0. P. McLENDON AND H. G. SMITH.

BALL BEARING CAR SASH.

APPLICATION FILED MAY 11. 1921.

1 24,502. Patented Aug. 1, 1922.

net-rte starts OLIVER r. MQLENDQN AND HARRY GLs I H, orxnqqsyinnn; 'i nxas; SAID s vrrrn Assienon T0 SAID McLENnoN.

, BALL-BEARING can sasn.

Application fi1ed May 17,

To all who "tit may concern:

Be it known that we, OLIVER P. MOLEN- DON and HARRY GzSMITH, citizens of the United States, residingfatjKingsville, in the county ofKlebergand State of Texas, have invented certain new and useful' Improvements in Ball-Bearing-Car Sashes, of which the following is a specification.

Our invention relates to car sashes for railroad cars, street cars and the like, and has for its object to provide such a device with means to facilitate the raising and lowering of the window. v

A further object of the invention is to provide a car sash with means which will prevent jamming at all times.

Another object of the invention is to provide concealed meansforfposjitively looking a car sash in any positiondesired,

Another object of the invention is to so locate the ball bearings and lock that they are entirely concealed, and can therefore be made of cheap material and Will require noattention after being installed.

Other objects of the invention will appear from the following description when taken in connection with the accompanying drawing, in which- Figure 1 is a fragmentary view of the sash frame and sash, a portion of the sash being cut away to show the construction.

Figure 2 is a vertical section through a portion of the sash frame.

Figure 3 is a horizontal section taken on line 3-3, Fig. 2.

Figure 4 is a horizontal section on line 44,-, Fig. 1; and

Figure 5 is a detail View.

Referring to the drawing in detail. and in which similar numerals refer to similar parts throughout the several views; numeral 1 designates a car sash guided in the frame 2. Seated in recesses in each of the side stiles of the sash, at the top and bottom thereof are containers 3, secured in place by means of the screws 4.

Riveted to the base of each of the containers 3 is an arched leaf spring 5. As shown in the drawing, this spring is secured at one end to the base of the container and has its other end free to permit movement thereof. Suitably secured to the spring, at the top of the arch, is a ball bearing clip 6.

Specification of Letters lfatent.

raised or lowered since the Pa nted Au -i1 19 3 :1 s ri l i -a es- This clip is shownas carrying three balls 7,

although a greater or less number may be usedfasffound desirable."

Secured in arecess in one side of the sash 1s a rack bar 8, which is adapted to cooperate with'the locking member for the sash in-a manner to b e laterdescribed;Q' j Inthe windowframe 2 is located the locking-mechanism, which consists of'a pinion 9, which is mounted-in bearings 10in the U- shapedframe 11. This pinionis positioned so as to engage the'te'eth'of the rack bar 8. The frame 11 is also provided withintegral ears v 12' to which i is pivoted the locking pawl 13; To'one end of pawl 13 is pivoted the plunger l l,provided on its end with the button l5. Al co'il spring'lfi surrounds'a portion of the plunger and engagesthepush button at one end'and spartan of the window frame at the other end.

In the operation of raising or lowering the sash it is only necessary to press the button 15, against the pressure of spring 16. This movement is transmitted through plunger 14 to pawl 18, which is thereby raised from engagement with the teeth of the pinion 9. The sash, carrying the rack 8, may now be pinion is free to rotate on its axis.

The raising and lowering of. the sash is greatly facilitated by the arrangement of the spring pressed bearings shown, since they not only reduce the usual friction but also prevent jamming ofthe sash against the frame.

It should also be noted thatin the embodiment shown, the only exposed parts are the push button and sash There are therefore no parts requiring polishing, etc., and furthermore, the working parts being concealed, can be made of the cheapest metal consistent with the strength required. Moreover, while we have shown the button and other locking meansas located at the left of the sash, it will be understood that it may be placed at the right thereof if found desirable.

In accordance with the patent statutes, we have described what we now believe to be the best embodiment of the invention, but we do not wish to be understood thereby as limiting ourselves or the scope of the invention, as many changes and modifications may be lift (not Sh0WIl).

3o the-sash, said spring made without departing fromthe spirit of the invention, all such we aim to include in the scope of the appended claims.

What we claim as new and desire to secure 5 by Letters Patent is: i

1. A car window sash provided with recesses adjacent the top and bottom thereof, bearings mounted in said recesses, each of said bearings including a clip, balls mounted therein, and a spring pressing saidclip and balls outwardly against the window frame in substantially the direction of the plane of the sash. v p p 1 2. A car window sash provided with re cesses adjacentthe top andbottom thereof, bearings mounted in said recesses, each of saidbearings' including a clip, balls mounted therein, and a spring pressing said clip and balls outwardly against the window frame in substantially the direction of the plane of the sash, said spring being arch shaped and having one endfree, 1 v I 3; -A car window sash provided with re c'esses adjacent ,the top and bottom thereof, bearings mounted in said recesses, each of said bearings including a clip,lballs mounted therein, and a spring pressing said clip and balls outwardly against the window frame. in direction of the plane of substantially the being arch shaped and being free at one end and attached to the sash'at the other end. i

4. A car window sash provided witherecesses adjacent the top and bottom thereof, 'bearing's mounted in said recesses, each of said bearings including a clip, balls mounted therein, said clip being shaped to conform to the curvature of the balls, and a spring attached tosaid clip and pressing the clip and balls outwardly agai st the window framein substantially the direction of the plane of the sash, said spring being arch shaped and having one end free and the other end attached to the sash.

5. A car window sash and frame, including a rack carried by the "sash, a pinion mounted in the frame and engaging said rack, means entirely housed within the frame for engaging and locking said pinion against rotation, the sash being provided with recesses adjacent the top and bottom thereof, bearings mounted in said recesses, each of said bearings including a clip, balls mounted therein, and a spring pressing said clip and balls outwardly against the window frame the sash.

1 HARRY, e. SMITH; I

in substantially the direction of the plane of 

